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A. l. IVIARCOUX AND R. 6. BRAY.

VENTILATOR.

APPLICATION FILED 0CT.22.19.'1.

iumntod J une 1T, 1919.

3 SHEE1`S^-SHEETb A. J. MARCOUX AND R. G. BRAY.

VENTILATOR.

APPLICATION FILED ocTv 22. 19H.

utcnod June 1T, 1919.

3 SHEETS-SHEET 2.

vENIIIAIoII.

Patented June 1T, 191).

3 SHEETS-SHEET 3.

m. mm

A. MARCOUX AND R. G. BRAY.

APPLICATION FILED 00T. 22. I9I1. 1,306,966.,

wbmww mw i in enanas arrasar caricia "Ll J'. MRCOUX .AND BEGINALD G.BRAY, OF SHERBROOKE, QUEBEC, CENAD.

vnivriLnroit.

i i Specification of Letters Patent. l Pgtgnbd Jun@ 1179 19190application filed october 22, i917. l semi no. ieaaoo.

To all/whom t may concern;

Be it known that we, ALEXANDER J. MAR- ooUx and REGINALD G. BRAY, bothsubjects of the King of Great Britain, residing at Sherbrooke, Provinceof Quebec, Canada, have.

tors and more particularly to an apparatus for automatically regulatingand controlling the temperature of a room, car, building or' the like sothat the temperature at all times will be nearly uniform.

An object of the present invention is to provide a device of thischaracter which may be thermo electrically controlled, whereby theventilator will be automatically conl trolled at all times.

With the above and other objects in view which will hereinafter appearas the description continues, the invention consists of the novelfeatures of construction, combination and formation of parts as will behereinafter more fully described and particularly pointed out in theappended claim.

In the accompanying drawings has been shown a simple and preferred formof the invention, it being, however, understood that no limitation isnecessarily made to the precise structural details herein exhibited, butthe right is hereby reserved to any changes, alterations ormodifications to which recourse may be had that come within the scope ofthe claim without departing from the spirit of the invention orsacrificingthe eiciency of the saine.

ln the accompanying drawings Figure 1 is a diagrammatical view illus-`tratin a plurality of windows adapted 4to be opene and closed by oneembodiment of the present invention;

Fig. 2 is a detail vertical section illustrating the window operatingmeans when in the position for closin the window,

Fig. 3 is a simi ar view showing the position of the window when open;

Fig. 4 is an enlarged vertical section through the cylinder and thevalve chest therefor; u A

Fig. 5 is a diagrammatical view of the apparatus for controlling thevalves showing the positions of the various parts when the windows areopen;

Fig. 6 is a similar view showin the neutral position of the thermostatan the controlling means when the windows are not bel ing operated;

Fig. 7 is a similar view showing the position of the operating meanswhen the windows are being closed;

Fig. 8 is an enlarged front elevation of-the circuit breaking switch;

Fig. 9 is a side elevation of the same; and

' Fig. 10 is a detail View of one of the valves. Y

Referring now more particularly to the accompanying drawings whereinlike and corresponding parts are designated by similar referencecharacters throughout the several views. v The numeral .1 indicates theframe-work of a building or room having the windows 2 hingedly connectedas at 3. ln Ventilating a room or car these windows are to be openedandclosed, and it is the purpose of the present invention to provide anapparatus for automatically opening and closing these windows.

To jointly connect the Windows 2, we provide a shaft 4 which isjournaled within the bearings 5 arranged u on the frame-work of crankarms- 6 w ich are connected to the windows 2 by means of the links 7.When the shaft 4 is oscillated in the direction of the arrow as shown inFig. 3, the windows will be jointly opened as shown iii this ligure, butwhen the shaft is oscillated in an opposite direction the windows willbe closed as shown in Fig. 2 of the drawings.

For oscillating the shaft 4 a pneumatic motor is providedwhich comprisesa cylinder 8 having a piston 9 adapted to reciprocate therein andcarried by this piston 9 is a piston rod 10. The crank arm 11 connectsthis piston rod l0 with the shaft 4, whereby upon thel reciprocation ofthe piston 9 the shaft 4 will be oscillated in opposite directions.

To cause the reciprocation of this piston 9, we provide means forcontrolling air 'to the opposite ends of the cylinder 8, but, ofcourse,it is to be understood that steain water or other similar Huids may beused within the sections 12 and 13 are the inlet channelways 22 whichcommunicate with the ports 20 arranged in the opposite ends of thecylinder. The inner faces of the plugs 18 are provided with the valveseats 21 and communicating with these valve seats are the inletchannelways 22. The inlets 23 are in communication with the supply pipes24. Arranged between the ianges 25 formed with the tube 14 andthesections 12 and 13, are the solenoids 26 and 27 respectively. A core28 is slidably mounted within the tube 14 and has a slightly lessexterior diameter than the interior diameter of the tube 14. Connectedto the opposite ends of the Core 28, preferably of metal and, as shown,cylindrical in general outline, are the valves 29 and 30. These valvesare so arranged as to open and close the channelways 19 and 22, so as toadmit and exhaust the air under pressure to the opposite ends of thecylinder 8. These valves each comprise two sections 31 and 32 which areconnected by the reduced portion 33. Also formed with the valves are thestems 34 which rest within corresponding recesses formed within theopposite ends of the core 28. These stems 34 are connected to the coreso that the valveswill move with the core but this connection is loose,so as to prevent any binding tendency of the core durin its movement.The section 31 of each o the valves is provided with a recess in whichis adapted to be ,seated a` stem 35 of a washer 36A which is preferablymade of rubber and which stems seat themselves within the valve seats21.

From the foregoing it is obvious that when the-core is moved in oppositedirections the valves will open and close the inlet and exhaust ports.When the core is in the position as shown in Fig. 4 the section 31 ofthe valve 29 will close the outlet port 15 and the channelway 19,whereas the inlet channelway 22 will be in communication with the inletpi e 24. When the valve 30 is seated within t e valve seat 21 the inletchannelway 22 and the inlet port 23 will be' To cause the core 28 totravel in opposite directions, the solenoids 26 and 27 are provided sothat when either of these solenoids is energized the core 28 will beattracted to the magnet which is energized, thereby opening and closingthe valves 29' and 30.

The electric circuit in which the solenoids 26 and 27 are includedcomprises the wires 36 and 37 each having one end connected to therespective terminals of the solenoids and their opposite ends connectedto the terminals 38 and 39 of the thermostat 40. The bar 41 of thisthermostat is adapted to contact with the terminals 38 and 39 andconnected to one end of this bar 41 is a wire 42 which leads from thebattery 43. The opposite terminals of the solenoids 26 and 27 haveconnected thereto the wires 44 and 45 and which wires are adapted to beconnected through the circuit breaking switch 46 with a wire 47 leadingto the battery 43. This circuit breaking switch, as better shown inFigs. 8 and 9, comprises two terminals 48 and 49 and a swinging switchblade 50 which is adapted to contact with the terminals 48 and 49.Projecting from the core 28 are `the lugs 51 and adapted to rest betweenthese lugs is a rod 52 carried by the switch blade 50. From this it willbe noted that as the solenoid moves in opposite directions, the switchblade 50 will also be oscillated so as to come in contact with theterminals 48 and 49.

The thermostat 40 is to be arranged Within the room or car having thewindows 2 therein, so that as the temperature within the room rises orlowers the bar 41 will be caused to move so as to contact with theterminals 38 and 39 and when the bar so moves the solenoids will beenergized so as to move the valves whereby the air under pressure willbe permitted to enter into and exhaust from the cylinder 8, therebycausing the piston toV move which in turn will cause the shaft 4 tooscillate, and thereby opening 110 and closing the windows 2. When thetemperature in the room increases the windows 2 should be open so as topermit airto enter the room. As the temperature in the room increasesthe bar 41 will assume the posi- 115 tion as shown in. Fig. 5. Theelectric current will then flow from the battery 43 through the wire 36,into the solenoid 26, through the switch blade 50 and linally return tothe battery 43 through the wire 47. 120 The solenoid being energized thecore 28 will be attracted in this direction, thereby causing the valve29 to open the exhaust I ports withinthe section 12 and the valve 30will in turn open the inlet ports within 125 the section 13 of the airchest. When the core 28 has been attracted by the solenoid 26 it willcause the switch blade 50 to move and assume the position as shown inFig. 7, thereby breaking this circuit and preventing any additionalcurrent from being used as the core 28 will remain in the position movedto'. The air under pressure` will then pass around the valve 30 andenter the cylinder 8 for forcing the piston in one direction, wherebythe shaft 4 will be oscillated and the windows 2 open. The air underpressure Within this cylinder will exhaust through the section l2. Whenthe temperature within the room decreases the bar 4l will assume theposition as shown in Fig. 6 or a neutral position, wherein neither ofthe circuits in which the solenoids are included will be supplied withcurrent as this bar is not in contact with either of the terminals 38and 39. When the bar 41 is in neutral position the temperature withinthe room is at the desired degree. When the temperature in the roomlowers to an undesired degree the bar 41 will contact with the terminal39, thereby causing the current to pass through the magnet 27 in thedirection of the arrows as shown in Fig. 7. When the electromagnet 27has been energized the core 28 will be moved to the position as shown inFig. 4, thereby permitting air to enter the opposite end of the cylinder8 and exhaust through the section 13, so as to permit the piston totravel in an opposite direction which in turn will oscillate the shaft 4and close the windows as better shown in Fig. 2. When the core 28 ismoved in this direction it will cause the switch blade 50 to assume theposition as shown in Fig. 5, thereby breaking the circuit in which themagnet 27 is included.

Having thus fully described our invention, what we claim as new anddesire to secure by Letters Patent is:

A reversing valve for reciprocal motors including, a tubular memberdisposed adjacent the motor cylinder having inlet and eX- haust ways inits opposite ends communicating with the ends of said cylinder, theopposite portions of the way in said member being enlarged andscrew-threaded, plugs having ways therein engaged in the enlargedportions and communicating with the inlet ways in the tubular member,the inner ends of the ways in the plugs forming seats, valves slidablein the end portions of the gaged with said valves and receivable in saidseats, at times, solenoid windings arranged about portions ofthe tubularmember, a reciprocal core in said tubular member detachably connected atits ends to said valves and adapted to be influenced by the windings,and temperature controlled circuit closing means connected to saidwindings for selectively energizing the same to cause reversing of theValves.

In witness whereof we have hereunto set our hands.

ALEXANDER J. MARCOUX. REGINALD Gr. BRAY.

tubular member, washers detachably en-

